I don't really know if it was old, but there was an indie game that I can't find, it was a top-down sci-fi shooter, you were stranded on an alien planet, you could choose between four characters; an android/robot/cyborg, an alien, an alien on a hover-chair thing, and a human, I think you found a gun in a bush, there was an in-game map-editor, and the world was in sections that you traveled between, the aliens looked kinda like the aliens from aliens, i don't remember anything about the aliens on the hover-chair thing, but I think they used implants or mind-powers, I think you crash landed an escape pod or something, on the intro text for the human, i think it said something about the alien on board sabotaging something but idk.